<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
<link rel="stylesheet" href="./assets/057-index.css">
<!-- 易错点：图片相对路径是要从当前的css样式文件的位置出发寻找 -->

    <!-- <style>
        div{
            width: 500px;
            height: 500px;
            border: 2px solid red;
            /* 背景图片：
            url被称为统一资源定位符
             */
            background-image: url(./assets/kele.jpg);
        }
    </style>
     -->
</head>
<body>
    <div>

    </div>
</body>
</html>